/**
 * Drives `fn(timestamp)` once per animation frame. Mirrors the shape
 * of {@link useTimeout}: returns `{start, stop}`, does NOT start
 * automatically, auto-stops on scope dispose. `fn` may call `stop()`
 * (or `start()`) to break out of or restart the loop synchronously.
 *
 * @param {(timestamp: DOMHighResTimeStamp) => void} fn
 * @returns {{ start: () => any; stop: () => any }}
 * @url https://pota.quack.uy/use/animate/useAnimationFrame
 */
export function useAnimationFrame(fn: (timestamp: DOMHighResTimeStamp) => void): {
    start: () => any;
    stop: () => any;
};
export function animateClassTo(element: Element, oldClass: string, newClass: string): Promise<unknown>;
export function animatePartTo(element: Element, oldPart: string, newPart: string): Promise<unknown>;
export function stopAnimations(element: Element): Animation[];
export function documentKeyframes(): any;
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